Curtain for dust-collecting apparatus.



No. 655,547. I Patented Aug. 7, |900. A. S. DWIGHT & B. RUETSCHI.

CURTAIN FUR DUST COLLECTING APPARATUS.

'(Appuwmn fil'ea ocrz. 9, 1899.) N o M o d el.)

Humm

UNITED STATES PATENT OFFICE.

ARTHUR SMITII DVVIGII'I, OF KANSAS CITY, MISSOURI, AND RUDOLF RUETSCHI, 0F ARGENTINE, KANSAS.

CURTAIN FOR DUST-COLLECTING APPARATUS. A

SPECIFICATION forming part of Letters Patent N o. 655,547, dated August '7, 1900. j l Applicailcn filed October 9,1899. Serial No. 733,073. (N0 model-1 To all whom z' may concern,.-

Be it known that we, ARTHUR SMITH DWIGHT, of Kansas City, in the county of Jackson and State of Missouri, and RUDOLF RUETSOHI, of Argentine, in the county of VVyandottefkand State of Kansas, have in- Ven-teda new and Improved Curtain for Dust- Collecting Apparatus, of which the following is a full, clear, and exact description. v

The invention relates to fume-arresters for mechanically precipitating and collecting me- 'tallic fumes and nue-dust in metallurgical establishments; and its object is to provide a new and im proved curtain for dust-collecting apparatus, to insure a thorough and quick collection of the solid matter carried by the furnace or other gases and fumes and arranged so that a given cdect can be produced with a shorter flue, the weight of metal necessary for the curtains be much diminished, lighter construction be used in supporting the curtains, and, in short, a considerable y cheapeningof the cost of construction can be effected with greatly-increased efficiency.

vThe invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of our invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a'sectional plan view of the im;

provement on the line l l in Fig. 2. Fig. 2is a sectional side elevationof the same on the line 2 2 in Fig. 3, and Fig. 3 is a cross-section of the same on the line 3 3 in Fig. 2.

In the chimney-flue A are arranged sets of curtains B, supported on suitable cross-bars C and reaching from the top or arch ot` the flue A a short distance below the upper ends of the'c'rossdams D for protecting the lluedust already collected in the bottom of the ue `from longitudinal movement therein by the action otthe current of the gases traveling through the flue in the direction of the arrow a-that is, in a direction parallel to the curtains B.' Each curtain Bis formed of sets of members B', each set being hung on longitudinal rods B2, supported by crossbars C, attached at their ends in the side walls of the flue A. The members B are arranged approximately parallel to one another, but stand obliquely to the direction of travel of the gases in the flue A, each member presenting oblique surfaces or facets to the longitudinal currents of the gases between adjacent curtains to divide such current intoa large number of smaller oblique currents to form eddies or whirls at or in close proximity tothe said surfaces or facets to insure a thorough and quick mechanical precipitation of the solid matter in the gases on said surfaces or facets, it being understood that by forming each curtain of a large number of members disposed obliquely to the current of the gases a large increase of frictional surface in the flue is had within a comparativelyshort length of flue, and as the collecting elhciency of the device depends mainly on the friction-al area it is evident that with our construction the desired result is readily attained. The deposit of solid matter on the members I3' clings to the latter until the weight of the matter overbalances its adhesive force, when the matter will drop and gather on the ioor of the flue between adjacent dams D to be removed from time to time by proper appliances. The curtains in succeeding sets are preferably arranged out of alineinent, as plainly indicated in Fig. l, thus again breaking up the gas-currents between suchsets, thereby tending to more thoroughly mix the gases between successive sets of cnrtains. .As the currents of gases pass between the individual curtains in a set the solid matter or dust is precipitated' on the surface of the members by friction; as is well. known in devices of this class; but this precipitation is greatly increased by disposing the individual members of each c :irtain obliquely to the current' to produce the whirls or edflies, as beflJ'f-i slated.

c do not limit ourselves to the particular construction and arrangement of the curtains as shown in the drawings, as it is evident that the same effect maybe accomplished by using as curtains panels or frames string; with parallel narrow ribbons,of metal or other material, having the plain surfaces turned oh liquely to the plane of the panel, but practi- IOO cally parallel to one another. These curtains or panels will then behung parallel one to the other in the flue in alinement with the direction of the current, so as to split up the latter, as already described, into parallel c urrents between the members.

In devices of this class as heretofore constructed sheet-metal plates ,or longitudinal curtains were suspended in the iue parallel.

to the direction in which the gases were traveling-as, for instance, as shown and described in the Letters Patent of `the United States No. 27 6,386, granted to Max Freudenberg, dated April 24, 1883. These plates are spaced uniformly across the flue and extend from the oorto the crown of the arch, so assheet metal; but We do not claim such construction nor the use of plates, as described in the patent referred to. Y Having thus fully described our invention, we claim as newand desire to, secure by` Letters Patent 1. A .curtain for dust-collecting apparatus, comprisingr a support, and a series of parallel vertical members carried by the support,

said members being arranged obliquely to a` vertical plane passing through the support and spaced apart, forming passages between adjacent members, as and for the purpose' set forth.

2. A curtaiutfor dust-collecting apparatus, comprising a-supporting rod or bar, and a seriesv of vertical members carried by the bar or rod,said members being arranged obliqu'ely to the bar or rod and spaced apart, whereby a curtain with a vseries of inclined passages will be formed, substantially as described.

3. In a dust-collecting apparatus, the combination with a ue, of a series of curtains arranged longitudinally in the flue, each curA tain being formed of a series of obliquely-arranged and spaced vertical members, substantially as described.v

4. In a dust-collecting apparatus, the combination with a iiue,"of a series of curtains arranged longitudinally in the ue, each curtain comprising a horizontal rod, and a series of vertical members hung on the Vrod to project on either side thereof, said members being arranged obliquely to the rod and spaced apart, substantially as described.

5. In a dust-collecting apparatus, the combination with a iiue having dams in its bottom, of a series of curtains arranged longitudinally in the iiue, and extending from the top of the iiue to a short, distance below the upper ends of -the dams, each curtain being formed of a series of members arranged obliquely to the length lof the flue and spaced apart, substantially as described.

6. In a dustlollecting apparatus, the-combination withv a flue, of a series of curtains arranged in sets in the ue and extending longitudinally hereof, the sets of curtains being out of alinement, and each curtain formed of a series of members spaced apart and arranged obliquely to the length of' the ilue,substantial1y as described.

7. The combination with a flue having dams in its bottom, of a series of curtains arranged longitudinally in the flue and extending from the top of the iiue to a short distance below the upper ends of the dams, each curtain comprising a rod, and a series of members caretl by the rod and projecting on either side of' the same, said members lbeing ai ranged obliquely to the rods and spaced apart, Y

substantially as described. f

ARTHUR SMITH DWIGHT. 4 RUDOLF RUETSOHI. y

Witnesses to the. signature of AArthur-S'. Dwight:

GEO. B. LEE, JUDD STEWART.

Witnesses to the signature of. Rudolff Ruetschi:

THEO. G. Hosrna, EVERARD BOLTON MARSHALL. 1 

